The term micron and the symbol μ were officially accepted for use in isolation to denote the micrometre in 1879, but officially revoked by the International System of Units (SI) in 1967.[7] This became necessary because the older usage was incompatible with the official adoption of the unit prefix micro-, denoted μ, during the creation of the SI in 1960.

In the SI, the systematic name micrometre became the official name of the unit, and μm became the official unit symbol.

Additionally, in American English, the use of "micron" helps differentiate the unit from the micrometer, a measuring device, because the unit's name in mainstream American spelling is a homograph of the device's name. In spoken English, they may be distinguished by pronunciation, as the name of the measuring device is invariably stressed on the second syllable, whereas the systematic pronunciation of the unit name, in accordance with the convention for pronouncing SI units in English, places the stress on the first syllable.

The plural of micron is normally "microns", though "micra" was occasionally used before 1950.[8][9][10]

^Ramel, Gordon. "Spider Silk". Archived from the original on 4 December 2008. Retrieved 14 December 2008. A typical strand of garden spider silk has a diameter of about 0.003 mm ... Dragline silk (about .00032 inch (.008 mm) in Nephila)

This page is based on a Wikipedia article written by contributors (read/edit).Text is available under the CC BY-SA 4.0 license; additional terms may apply. Images, videos and audio are available under their respective licenses.

Contents

Advertising Enquiry

We always like to be transparent on pricing but we customise each campaign specifically for each client so pricing can differ in many ways , so we highly suggest you complete this form below and one of our campaign specialists will contact you to discuss all your requirements.

If your enquiring about a personal page just leave the company details blank.

Advertising Enquiry

We always like to be transparent on pricing but we customise each campaign specifically for each client so pricing can differ in many ways , so we highly suggest you complete this form below and one of our campaign specialists will contact you to discuss all your requirements.

If your enquiring about a personal page just leave the company details blank.